Main synchronization sequence design method for global covering multi-beam satellite LTE

摘要

Disclosed is a main synchronization sequence design method for global covering multi-beam satellite LTE, comprising the follow steps: extending a standard Zadoff-Chu sequence to a generalized Zadoff-Chu sequence so as to obtain an initial candidate main synchronization sequence set of more candidate sequences; gradually narrowing down the candidate main synchronization sequence set according to a selection standard of a main synchronization sequence to obtain a final candidate main synchronization sequence set; and obtaining a main synchronization sequence set with optimal eclectic performance and complexity from the final candidate main synchronization sequence set. According to the present invention, a main synchronization sequence with optimal eclectic performance and calculation complexity can be designed for a global covering same-frequency networking multi-beam satellite LTE system.

主权项

1. A system for designing a main synchronization sequence for utilization in a global covering multi-beam satellite LTE having a processor configured to define and generate candidate main synchronization sequences comprising:
said processor including a non-transitory computer-readable medium with a sequence of instructions to generate and provide said candidate main synchronization sequences for said multi-beam satellite LTE, through the following steps: (1) extending a standard Zadoff-Chu sequence into a generalized Zadoff-Chu sequence, so as to obtain more sets of initial candidate main synchronization sequences of candidate sequences; (2) reducing the sets of candidate main synchronization sequences according to a predetermined selection criteria for main synchronization sequences, to obtain a final set of candidate main synchronization sequences, obtaining a time domain sequence su(n) by carrying out zero padding and N-point inverse discrete Fourier transform for the sequences in the set of initial candidate main synchronization sequences:su⁡(n)=1Nzc-1⁢∑k=0N-1⁢⁢d^u⁡(k)⁢exp⁡(j⁢⁢2⁢⁢π⁢⁢k⁢⁢nN),⁢n=0,1,…⁢,N-1where,⁢d^u⁡(k)={du⁡(k+Nzc-12-1)k=1,2,…⁢,N2-1du⁡(k-N+Nzc-12)k=N2+1,N2+2,…⁢,N-10k=0,N2; where, Nzc is the sequence length and N is the number of time samples; and (3) obtaining a set of main synchronization sequences that represents a high level of performance while reducing complexity from the final set of candidate main synchronization sequences.